Stall Speed Test Procedure
WARNING: This page is about a different car, the 2002 Toyota Land Cruiser, 2002 Lexus LX 470, 2001 Toyota Land Cruiser, and 2001 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
DO NOT maintain stall speed RPM for more than 5 seconds. Allow engine to idle for one minute between tests to allow fluid to cool.
NOTE:
If stall speed RPM is more than 600 RPM below specifications, torque converter may be faulty.
- Operate engine and transmission at normal operating temperature. Connect scan tool to DLC3, located under instrument panel. Apply parking brake and block front wheels.
- On both models, start engine, apply brake pedal and place transmission in "D". Accelerate engine to full throttle and note maximum RPM obtained. Repeat test in "R" position. Compare reading obtained to specification. See STALL SPEED SPECIFICATIONS table. If stall speed is not to specification, check for the following conditions:
- If stall speed is the same for both ranges but lower than specification, engine output may be insufficient or stator one-way clutch may not be operating properly.
- Stall speed exceeding specification in "D" range may be caused by a slipping forward clutch, defective No. 2 or overdrive one-way clutch, low main line pressure or transfer case direct clutch slipping.
- Stall speeds exceeding specification in "R" range may be caused by a low main line pressure, direct clutch slipping, 1st and reverse brake slipping, overdrive one-way clutch defective or transfer case direct clutch slipping.
- Stall speeds exceeding specification in both ranges may be caused by a low main line pressure, improper fluid level or defective overdrive one-way clutch.
STALL SPEED SPECIFICATION
| Application | Stall Speed (RPM) |
|---|---|
| Lexus LX470 | 2150-2450 |
| Toyota Land Cruiser | 2150-2450 |